7sd52x differential protection for 2-6 line-terminals_catalo

7/29/2019 7SD52x Differential Protection for 2-6 Line-Terminals_Catalo

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Function overview

Description

Siemens SIP 2002

7 Line DifferentialProtection/ 7SD52

7

Application

Differential protection for universal use

with HV and EHV lines, cables and

busbars

Two end and multi-end capability

(max. 6 line ends)

Suitable for transformers in protected

zone

Well-suited for serial compensated lines

Protection functions

Differential protection with

phase-segregated measurement Sensitive measuring stage for high-

resistance faults

Three-stage overcurrent protection

Phase-selective intertripping

Overload protection

Auto-reclosure single/three-pole

(option)

Breaker failure protection

Switch-onto-fault protection

Control functions

Commands for control of circuit-

breakers and disconnectors (isolators)

Monitoring functions

Self-supervision of relay

Trip circuit supervision

8 oscillographic fault records

CT-secondary current supervision

Front design

User-friendly local operation

14 LEDs for local alarm

PC front port for convenient relay

setting

Communication topologies / interfaces Ring topology (closed ring)

Chain topology

System interface

IEC protocol

Features

Browser-based commissioning tool

Tripping time 10 15 ms

Connection to digital communication

networks and pilot wires

Tolerates loss of one data connection in

a ring topology (rerouting in 20 ms).

The differential protection scheme isfully available in a chain topology.

SIPROTEC 7SD52Multi-End Differential Protection Relay for Two to Six Line Ends

The 7SD522/523 relay provides full schemedifferential protection and incorporates allfunctions usually required for the differen-

tial protection of transmission lines. It isdesigned for all transmission and distribu-tion levels and protects lines with two upto six line ends. The relay is designed toprovide fast and phase-selective fault clear-ance. The relay uses fiber-optic cables ordigital communication networks toexchange telegrams and includes specialfeatures for the use in multiplexed com-munication networks. Also pilot wires canbe used with an external converter. Thiscontributes towards improved reliabilityand availability of the electrical powersystem.

The 7SD522/523 is suitable for single andthree-phase tripping applications for twoup to six line ends. Also, transformers andcompensation coils within the differentialprotection zone are protected as are serialand parallel-compensated lines and cables.The relays may be employed with any typeof system earthing.

The units measure the delay time in thecommunication networks and adaptivelymatch their measurements accordingly.

A special GPS-version allows the use of therelays in communication networks, wherethe delay time in the transmit and receivepath may be quite different.

The serial interfaces of the differentialrelays can flexibly be adapted to therequirements of communication networksor multi-mode and mono-mode FOconnection.If the communication method is changed,flexible retrofitting of communicationmodules to the existing configuration ispossible.

Fig. 7/36

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ANSI

87L Ifor lines / cables

87T Ifor lines / cableswith transformers

85 Phase-selectiveintertrip, remote trip

86 Lockout function

50 Three-stage overcurrentprotection

51 Instantaneous high-currenttripping

78 Single or three-pole

auto-reclosure with newadaptive technology

49 Overload protection

50BF Breaker failure protection

74TC Trip circuit supervision

50-STUB STUB bus protection

50 BF Breaker failure protection

Siemens SIP 2002

7 LineDifferential Protection / 7SD52

7

Application

Fig. 7/37 1) Voltage inputs as an option. Not required for differential protection.

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Fig. 7/38 Application for a three line ends (Ring topology)

TypicalapplicationsSIPROTEC 7SD52 is especially designedfor two and more line ends (up to 6). Onthe TAP-line, the 7SD52 differential relayis connected to current (CT) and option-ally voltage (VT) transformers. For the dif-ferential functions only CTs are necessary.A connection to the VTs improves the fre-quency measurement and offers increasedinformation, such as fault records withvoltages.

Connection techniques and housing withmany advantages

1/2 and full-rack sizes: These are the avail-able housing widths of the SIPROTEC 47SD522/523 relays, referred to a 19" mod-ule frame system. The height is a uniform243 mm (9.57 inches) for all housingwidths.

The link to the other relays is made bymulti-mode or mono-mode FO cables.There are 4 optical modules available,

which correspondingly cover: 820 nm, up to 1.5 km,multi-mode

820 nm, up to 35 km, multi-mode

1300 nm, up to 10 km, mono-mode

1300 nm, up to 35 km, mono-mode

Direct fiber-optic connection offers high-speed data exchange with 512 kbit/s andimproves the speed of the differentialconfiguration.

At the main line two differential relays areconnected to CTs. The communication is

made via a multiplexed communicationnetwork. The 7SD52 offers many featuresto reliably and safely handle data

exchange via communication networks.

Depending on the bandwidth available inthe communication system 64, 128 or512 kbits/s can be selected for the X21(RS422) interface; the G703.1 interfaceworks with 64 kbits/s.

The connection to the communicationdevice is effected via cost-effective 820 nminterface with multi-mode FO cables. Acommunication converter converts the op-tical to electrical signals. This offers an in-terference-free and isolated connectionbetween the relay and the communication

device.

Siemens SIP 2002


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Application

Construction

Fig. 7/39

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Differential protection

The differential protection function hasthe following features:

Measurements are performed separatelyfor each phase; thus the trip sensitivity isindependent of the fault type.

An adaptive, sensitive measurementmethod with high sensitivity for differen-tial fault currents below the rated currentoffers the detection of highly resistivefaults. This trip element uses special fil-ters, which offers high security even withhigh level DC-components in the short-circuit current. The trip time of this stageis about 30 ms.

A high-set differential trip stage whichclears differential fault currents higherthan the rated current within 10 15 msoffers fast tripping time and high-speedfault clearence time.

When a long line or cable is switched on,transient charge currents load the line.To avoid a higher setting of the sensitivedifferential trip stage, this setpoint maybe increased for a settable time. This of-

fers greater sensitivity under normal loadconditions.

With the setting of the CT-errors the re-lay automatically calculates the re-straint/stabilization current and adaptsits permissible sensitivity according theCTs data in the differential configura-tion, optimizing sensitivity.

Different CT ratios at the line ends arehandled inside the relay. The mismatchof 1 to 6 is allowed.

The differential protection trip can becombined with an overcurrent pickup.Thus differential current and overcur-rent lead to a final trip decision.

Easy to set tripping characteristic.Because the relay works adaptively, onlythe setpoint IDiff> (sensitive stage) andIDiff>> (high-set current differentialstage) must be set according to thecharge current of the line/cable.

Differential and restraint currents aremonitored continuously during normaloperation and are displayed as opera-

tional measurements.

High stability during external faults evenwith different current transformers satu-ration level. For an external fault, only

5 ms saturation-free time are necessaryto guarantee the stability of the differen-tial configuration.

With transformers or compensation coilsin the protection zone, the sensitive tripstage can be blocked by an inrush detec-tion function. It works with the secondharmonic of the measured current whichis compared with the fundamental com-ponent.

With transformers in the protectionzone, vector group adaptation and

matching of different CT ratios arecarried out in the relay. Additionally, thezero-sequence current flowing through aearthed neutral is eliminated from thedifferential measurement. The 7SD52therefore works like a transformer differ-ential relay, whereas the line ends may befar away.

Enhanced communication features forcommunication networks

The data required for the differentialcalculations are cyclically exchanged infull-duplex mode in form of synchronous,

serial telegrams between the protectionunits. The telegrams are secured with CRCcheck sums, so that transmission errors ina communication network are immedi-ately detected.

Data communication is immune toelectromagnetic interference becausefiber-optic cables are employed in thecritical region.

Supervision of each individual incomingtelegram and of the entire communica-tion path between the units without

additional equipment.

Unambiguous identification of each unitis ensured by assignment of a settablecommunication address within a differ-ential protection topology. Only thoseunits mutually known to each other cancooperate. Incorrect interconnection ofthe communication links results inblocking of the protection system.

Detection of reflected telegrams in thecommunication system.

Detection of delay time changes in

communication networks.

Measurement of the delay time to theremote line ends with dynamic compen-sation of the delay in the differentialmeasurement. Supervision of the maxi-mum permissible delay time is included.

Generation of alarms on heavilydisturbed communication links. Faultytelegram counters are available asoperational measurement.

With a GPS high precision 1s pulse from aGPS receiver the relayscanbe synchro-nized with an absolute,exact time at eachline end. In this way the delay in the receiveandtransmitpath can be measuredexactly.With this optional feature the relay canbeused in communication networks wherethis delay times arequite different.

Phase-selective intertrip and remotetrip/indications

Normally the differential fault current iscalculated for each line end nearly at thesame time. This leads to fast and uniformtripping times. Under weak infeed condi-tions, especially when the differential func-tion is combined with an overcurrentpickup a phase-selective intertrip offers atripping of all line ends.

7SD52 has 4 intertrip signals which aretransmitted in high-speed (< 20 ms) tothe other line ends. These intertrip signalscan also be initiated by an external relayvia binary inputs and therefore be used toindicate, for example, a directional deci-sion of the backup distance relay.

In addition, 4 high-speed remote tripsignals are available, which may be initi-ated by an external or internal event.

24 remote signals can be freely assignedto inputs and outputs at each line endand are circulating between the differentdevices.

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Fig. 7/40 Tripping characteristic

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Communication topologies / modes ofoperation

The differential relays may work in a ringor daisy chain line topology. Use of a testmode offer advantages under commission-ing and service conditions.

The system tolerates the loss of one dataconnection in a ring topology. The ringtopology is rerouted within 20 ms form-ing then a chain topology, while the dif-ferential protection function isimmediately reactivated.

When the communication connectionsneed to be reduced or when these are notavailable, the whole system is able tofunction without interruption as chaintopology. At the line ends only cost-effective 7SD522 relays are necessary forthis application.

The two-end line is a special case, be-cause when the main connection is inter-rupted, the communication switchesover from a main path to a secondarypath. This standby transmission functionensures a high availability of the systemand protects differential protectionagainst communication route failure onimportant lines.

In a ring topology, one line end can belogged out from the differential protec-tion topology for service or maintenancereasons by a signal via binary input.Checks for the breaker position and loadcurrent are made before this logout is ini-tiated. In a chain topology, the relays atthe end of the line can be logged out fromthe differential protection topology.

The whole configuration can be set up

into a test mode. All functions and indi-cations are available except the breakersare not tripped. The local relay can betested and no trip or intertrip reaction iseffected by the other relays.

Thermal overload protection (ANSI49)

A built-in overload protection with a cur-rent and thermal alarm stage is providedfor the thermal protection of cables andtransformers.

The trip time characteristics are exponen-tial functions according to IEC 60255-8.

The preload is thus considered in the triptimes for overloads.

An adjustable alarm stage can initiate analarm before tripping is initiated.

Backupovercurrent protection(ANSI 50,50N, 51,51N)

The 7SD522/523 provides a backupovercurrent protection. Two definite-timestages and one inverse-time stage (IDMT)are available, separately for phase currentsand for the neutral (residual) current. Twooperating modes are selectable. The func-tion can run in parallel to the differentialprotection or only for backup during inter-ruption of the protection communication.

The following ANSI/IEEE inverse-timecharacteristics are available:

Inverse

Short inverse

Long inverse

Moderately inverse

Very inverse

Extremely inverse

Definite inverse

Breaker failure protection (ANSI50BF)

The 7SD52 relay incorporates a two-stagebreaker failure protection to detect thefailure of tripping command execution, forexample due to a defective circuit-breaker.The current detection logic is phase-segregated and can therefore also be usedin single-pole tripping schemes. If the faultcurrent is not interrupted after a settabletime delay has expired, a retrip commandor a busbar trip command is generated.The breaker failure protection can be initi-ated by all integrated protection functionsas well as by external devices via binaryinput signals.

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Fig. 7/41 Differential protection in ring or chain topology

( )

t =0,14

p

p

I I0 02

1,

T

Fig. 7/42 Normal inverse


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STUB bus overcurrent protection(ANSI 50(N)-STUB)

The STUB bus overcurrent protection is aseparate definite-time overcurrent stage. Itcan be activated from a binary input sig-nalling that the open line isolator (discon-nector) is open.

Separate settings are available for phaseand earth (ground) faults.

Instantaneous high-speed switch-onto-fault overcurrent protection(ANSI 50HS)

Instantaneous tripping is possible whenenergizing a faulty line. On definitelarge-fault currents, the high-speedswitch-onto-fault overcurrent stage caninitiate very fast 3-pole tripping.

With lower fault currents, instantaneoustripping after switch-onto-fault is also pos-sible if the breaker positions at the lineends are monitored and connected to therelays. This breaker position monitor of-fers a high-speed trip during switch-onto-fault conditions.

The switch-onto-fault initiation can be de-

tected via the binary input manual closeor automatically via measurement.

Auto-reclosure (ANSI79)

The 7SD522/523 relay is equipped with anauto-reclosure function (AR). The func-tion includes several operating modes:

3-pole auto-reclosure for all types offaults; different dead times are availabledepending on the type of fault.

1-pole auto-reclosure for 1-phase faults,no reclosure for multi-phase faults.

1-pole auto-reclosure for 1-phase faultsand for 2-phase faults without earth-fault current.

1-pole auto-reclosure for 1-phase and3-pole auto-reclosure for multi-phasefaults.

Multiple-shot auto-reclosure.

Interaction with an external protectionrelay for auto-reclosure via binary inputsand binary outputs.

Control of the integrated AR function byexternal protection.

Adaptive auto-reclosure. Only one lineend is closed after the dead time. If thefault persists this line end is switched off.Otherwise the other line ends are closedvia a command over the communicationlinks. This avoids stress when heavy faultcurrents are fed from all l ine ends again.

Supervision by an externalsynchro-check.

Monitoring of the circuit-breakerauxiliary contacts.

Voltage check for discrimination be-

tween successful and non-successfulreclosure attempts.

In addition to the above-mentioned oper-ating modes, several other operatingmodes can be performed by means of theintegrated programmable logic (CFC).

Current transformer/ Monitoringfunctions

The 7SD522/523 relay provides compre-hensive monitoring functions coveringboth hardware and software. Furthermore,the measured values are continuouslychecked for plausibility. Thus the current

transformers are also included in thismonitoring system.

A broken wire between the CTs and relayinputs under load may lead to malopera-tion of a differential relay if the load cur-rent exceeds the differential setpoint. The7SD52 provides fast broken wire super-vision which immediatelly blocks all lineends if a broken wire condition is mea-sured by a local relay. This avoidsmaloperation due to broken wire condi-tion. Only the phase where the broken wireis detected is blocked. The other phases

remain under differential operation.Additional measurement supervisionfunctions are

Symmetry of currents

Summation of phase/neutral currents

Phase-sequence supervision of currents

Trip circuitsupervision(ANSI74TC)

One or two binary inputs for each circuit-

breaker pole can be used for monitoringthe circuit-breaker trip coils including theconnecting cables. An alarm signal is is-sued whenever the circuit is interrupted.

Lockout(ANSI 86)

All binary outputs can be stored like LEDsand reset using the LED reset key. Thelockout state is also stored in the event ofsupply voltage failure. Reclosure can onlybe issued after the lockout state is reset.

Local measured values

The measured values are calculated fromthe measured current and voltage signalsalong with the power factor (cos ), thefrequency, the active and reactive power.Measured values are displayed as primaryor secondary values or in percent of thespecific line rated current and voltage. Therelay uses a 20 bit high-resolution AD con-verter and the analog inputs are factory-calibrated, so a high accuracy is reached.The following values are available for mea-sured-value processing:

Currents 3 xIphase, 3 I0, IE

Voltages 3 xVphase-earth,3 xVphase-phase,3 V0,Ven

Symmetrical components I1, I2, V1, V2

Real power P(Watt), reactive powerQ (Var), apparent power S (VA)

Power factor p.f. (= cos )

Frequencyf

Differential and restraint current perphase

Availability of the data-connection to theremote line ends per minute and per hour

Regarding delay time measuring with theGPS-version the absolute time for trans-mit and receive path is displayed sepa-rately.

Limit value monitoring: Limit valuesare monitored by means of the CFC.Commands can be derived from theselimit value indications.

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Measured values at remote line ends

Every two seconds the currents and volt-ages are freezed at the same time at allline ends and transmitted via the commu-nication link. At a local line end thereforecurrents and voltages are thus availablewith their amount and phases (angle)locally and remotely. This allows checkingthe whole configuration under load condi-tions. In addition, the differential andrestraint currents are also displayed.Important communication measurements,such as delay time or faulty telegrams perminute/hour are also available as measure-

ments.

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Protection functions Function RegionWorld USA DE

Frequency50/60 Hz

preset to50 Hz 60 Hz 50 Hz

Inverse-time

characteristic for

backup overcur-

rent protection

IEC, ANSI1)

presetto IEC

ANSI1)

IEC

Inverse-time

characteristic

for earth

IEC, ANSI1)

Logarithmic

inverse

presetto IEC

ANSI1)

IEC

Overcurrent-

time

protection

3 3

1) Disc-emulation with inverse-time characteris-tic may be applied with ANSI characteristics

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Operational measured values are clearlyshown on the LCD display

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Some fault indications are shown automat-ically on the LCD display

Fig. 7/43 Browser-aided commissioning

Commissioning

Special attention has been paid to commis-sioning. All binary inputs and outputs canbe displayed and activated directly. Thiscan simplify the wiring check significantly

for the user.

Furthermore, all currents and optionalvoltages and phases are available via com-munication link at the local relay and aredisplayed in the relay, with DIGSI 4 or aspecial commissioning program runningin a standard browser (Internet Exploreror Netscape Navigator).

The operational and fault events and faultrecords from all line ends share a commontime tagging which allows to compareevents registered in the different lineends on a common time base.

Browser-based commissioning tool

The 7SD52 provides a commissioning andtest program which runs on a standardInternet browser (no special software isrequired at the PC). This program showsthe protection topology and comprehen-sive measurements from local and remoteline ends. Local and remote measurementsare shown as phasors and the breakerpositions of each line end are depicted.

Furthermore the tripping characteristicwith the calculated differential and re-

straint values is displayed in the browserwindow.

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Substation control / systeminterface

The 7SD52 has a substation control inter-face according to the IEC 60870-5-103standard. This interface permits the electri-cal or optical connection of the 7SD52 to asubstation control system i.e., the SICAMsystem with the IEC-protocol.

Service / modem interface

By means of the RS232/RS485 or opticalinterface, it is possible to efficiently operatea number of protection units centrally viaDIGSI 4 or a standard browser. Remote

operation is possible on connection of amodem. This offers the advantage of rapidfault clarification, especially in the case ofunmanned power plants.

With the optical version, centralized oper-ation can be implemented by means of astar coupler.

Flexible communication modules forsubstation control and service interface

The 7SD52 relay employs flexible interfacemodules.

A 820 nm fiber-optic module, which

enables connection to multi-mode FOcable with ST connectors is available forthe system and modem communications.

The RS485 or RS232 electrical interfacesare also available.

The protection interfaces have thefollowing options:

820 nm fiber-optical interface with clockrecovery / ST connectors for direct con-nection with multi-mode FO cable up to1.5 km or the connection to a communi-cation converter.

820 nm fiber-optical interface / STconnectors for direct connection up to3.5 km with multi-mode FO cable.

1300 nm fiber-optical interface / STconnectors for direct connection up to10 km with mono-mode FO cable.

1300 nm fiber-optical interface / FCconnectors for direct connection up to35 km with mono-mode FO cable.

The connection to a multiplexed com-munication network is accomplished byan auxiliary communication converter.

This is fitted with the 820 nm interfaceand ST connectors on the relay side.Either an electrical X21 (RS422) interfaceor G703.1 interface can be selected onthe communication network side.

Siemens SIP 2002


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Communication

Fig. 7/46 Centralized communication via star coupler

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Fig. 7/44 Fiber-optic communication module Fig. 7/45 RS232/RS485 electrical communi-

cation module

Fig. 7/47 IEC 60870-5-103 star-type RS232 copper

conductor connection or fiber-opticconnection

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The connection to a pilot wire or twistedtelephone pair is carried out by means of

a communication converter.Internal 5 kV isolation towards the pilotwire is provided. For external isolationtransformers, 20 kV are possible as well.The connection via FO cable to the relayis interference-free.


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Communication possibilities between relays

Siemens SIP 2002


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Communication

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Fig. 7/48 Direct optical link up to 1.5 km Fig. 7/49 Direct optical link up to 3.5 km

Fig. 7/50 Direct optical link up to 10 km Fig. 7/51 Direct optical link up to 35 km

Fig. 7/52 Connection to a communication network

Fig. 7/53 Connection to a pilot wire


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Typicalconnection of current andvoltagetransformers

The typical AC connection has 3 phasecurrent transformers and 3 phase-earthvoltage transformers. The neutral (resid-ual) current (IN = 3 I0) is measured via theI4-current transformer as the sum of the3 phase currents.

The zero-sequence voltage 3 V0 is notmeasured externally but calculated by themicroprocessor.

Note:

Voltage inputs are always available in therelay. But there is no need to connect it tovoltage transformers for the differentialprotection function.

Siemens SIP 2002


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Typical connection

7/44

Fig. 7/54 Typical connection to current transformers with optional voltage inputs


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Siemens SIP 2002


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Technical data

Hardware

Analoginputs

Rated frequency 50 or 60 Hz (selectable)

Rated current IN 1 or 5 A (selectable, controlled byfirmware)

Rated voltage 80 to 125 V (selectable)

Power consumptionIn CT circuitswith IN = 1 AIn CT circuitswith IN = 5 AIn VT circuits

Approx. 0.05 VAApprox. 0.30 VAApprox. 0.10 VA

Thermal overload capacityIn CT circuits

In VT circuits

100 xIN for1s30 xIN for 10s4 xIN continuous

230 V, continuous per phase

Dynamic overload capacityIn CT circuitsIn the CT circuit for high sensitiveearth-fault protection(refer to ordering code)

250 xIN (one half cycle)

Auxiliary voltage

Rated voltage 24 to 48 V DC60 to 125 V DC 1)

110to 250V DC 1)

and 115V ACwith50 / 60 Hz

Permissible tolerance -20 % to +20 %

Max. superimposed AC voltage(peak-to-peak)

15 %

Power consumptionDuring normal operationDuring pickup with all inputsand outputs activated

Approx. 8 WApprox. 18 W

Bridging time during auxiliaryvoltage failureVaux110 V 50ms

Binary inputs

QuantityFunction can be assigned 8 or 16 or 24

Minimum permissible voltageRange is selectable with jumpersfor each binary input

17or 73or 154 V DC, bipolar(3 operating ranges)

Maximum permissible voltage 300 V DCCurrent consumption,energized Approx. 1.8 mA

Output relays

QuantityFunction can be assigned

16 or 24 or 32

Switching capacityMakeBreakBreak (for resistive load)Break (for = L/R 50 ms)

1000 W /VA30VA40 W25VA

Switching voltage 250 V

Permissible current 30 A for 0.5 s5 A continuous

LEDs

Quantity

RUN (green) 1

ERROR (red) 1

Indication (red), function can beassigned

14

Unit version

Housing 7XP201/2 x 19 or1/1 x 19

See dimension drawings, part 16

Degree of protection acc. to EN 60529Surface-mounting housingFlush-mounting housing

Rear

FrontFor the terminals

IP51

IP50

IP51IP 20 with terminal cover put on

WeightFlush mounting

1/2x 191/1x 19

Surface mounting1/2x 191/1x 19

6 kg10kg

11kg19kg

Serial interfaces/ front of unit Operating interface 1 forDIGSI 4 or browser

Connection front panel, non-isolated, RS232,9-pin subminiature connector

Baud rate 4800 to 115200 bauds

Serial interfaces/ rear of unit Time synchronization with IRIG-B signal / DCF77 /

SCADA or 1 s pulse from GPS

Connection 9-pin subminiature connector

Voltage levels 5 or 12 or 24 V

Service interface (Operating interface 2)for DIGSI4 / Modem / Service

Isolated RS232/RS485Dielectric testDistance for RS232Distance for RS485, depends on

the baud rate

9-pin subminiature connector500V/ 50 HzMax.15 mMax. 1000 m

Fiber-opticOptical wavelengthPermissible attenuationDistance

Integrated ST connector = 820 nmMax. 8 dB for glass-fiber 62.5/125 mMax. 1.5 km

System interfaceIEC 60870-5-103

Isolated RS232/RS485Baud rateDielectric testDistance for RS232Distance for RS485

9-pin subminiature connector4800 to 38400 bauds500V /50 HzMax.15 mMax. 1000 m

Fiber-optic

Optical wavelengthPermissible attenuationDistance

Integrated ST connector

= 820 nmMax. 8 dB for glass-fiber 62.5/125 mMax. 1.5 km

7/45

1) Ranges are settable by means of jumpers


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7 Line DifferentialProtection / 7SD52

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Serialinterfaces / protection interface

Protectioninterface1/2

Fiber optic 820 nm with clock recoveryDirect connection up to 1.5 km or forconnection to the communicationconverter

With 62.5 125 m multi-mode FOcable, ST connectors

Fiber-optic 820 nmDirect connection up to 3.5 km

With 62.5 125 m multi-mode FOcable, ST connectors

Fiber-optic 1300 nmDirect connection up to 10 km

With 9/125 m mono-mode FOcable, ST connectors

Fiber-optic 1300 nmDirect connection up to 35 km

With 9/125 m mono-mode FOcable, FC connectors

External communication converter 7XV5662-0AA00for communication devices

External communication converter tointerface between the relays, optical820 nm interface and the X21/G703.1interface of a communication device.

X21/G703, RS422 selectable by jump-ers. Baudrate selectable by jumpers.

Input: fiber-optic 820 nmwith clock recovery

Max. 1.5 km with 62.5/125 mmulti-mode FO cable to device side

Output: X21 (RS422) electricalinterface on communication device

64/128/512 kBit (selectable byjumper)max. 800 m, 15-pin connector

G703.1 electrical interface oncommunication device

64 kBit/s, max. 800 m, screw-typeterminal

External communication converter 7XV5662-0AC00 for pilot wires

External communication converter tointerface between relays, optical820 nm interface and a pilot wire ortwisted telephone pair.

Typical distance 8 .... 10 km

Fiber-optic 820 nm with clockrecovery

Max. 1.5 km with 62.5/125 mmulti-mode FO cable

Pilot wire Screw-type terminal 5 kV isolated

Permissible time delay (duration of data transmission)

Delay of telegrams due to trans-mission for one unit to the other.

Delay is constantly measured andadjusted

Max. 30 ms per transmission pathPermissible max. value can be

selected

Electrical tests

Specifications

Standards IEC 60255 (product standards)ANSI/IEEE C37.90.0/.1/.2UL 508For further standards seeIndividual functions

Technicaldata

Insulation tests

Standards IEC 60255-5

Voltage test (100 % test)All circuits except for auxiliarysupply, binary inputs andcommunication interfaces

2.5 kV (r.m.s.), 50 / 60 Hz

Auxiliary voltage and binary inputs(100 % test)

3.5 kV DC

RS485/RS232 rear side communi-cation interfaces and time synchro-nization interface (100 % test)

500 V (r.m.s.), 50 / 60 Hz

Impulse voltage test (type test)All circuits except for communi-cation interfaces and time synchro-nization interface, class III

5 kV (peak); 1.2/50 s; 0.5 J3 positive and 3 negative impulses atintervals of 5 s

EMC tests for noise immunity (Type tests)

Standards IEC 60255-6, IEC 60255-22(product standards)(Type tests) EN 50082-2(generic standard)DIN 57435 part 303

High frequency testIEC 60255-22-1, class III andVDE 0435 part 303, class III

2.5 kV (peak); 1 MHz; = 15 ms;400 surges per s;test duration 2 s

Electrostatic dischargeIEC 60255-22-2, class IVEN 61000-4-2, class IV

8 kV contact discharge; 15 kV airdischarge; both polarities; 150 pF;Ri = 330

Irradiation with RF field,

non-modulatedIEC 60255-22-3 (report), class III

10 V/m; 27 to 500 MHz

Irradiation with RF field,amplitude-modulatedIEC 61000-4-3, class III

10 V/m; 80 to 1000 MHz;80 % AM; 1 kHz

Irradiation with RF field,pulse-modulated IEC 61000-4-3/ ENV50204, class III

10 V/m; 900 MHz; repetition fre-quency 200 Hz; duty cycle 50 %

Fast transients, burstsIEC 60255-22-4 andIEC 61000-4-4, class IV

4 kV; 5/50 ns; 5 kHz;burst length = 15 ms;repetition rate 300 ms;both polarities;Ri = 50 ;test duration 1 min

High-energy surge voltages (SURGE),IEC 61000-4-5, installation, class III

Auxiliary supply Common mode: 2 kV, 12 , 9 FDifferential mode: 1 kV; 2 , 18 F

Measurements inputs, binary inputs,binary outputs

Common mode: 2 kV, 42 , 0.5 FDifferential mode: 1 kV; 42 , 0.5 F

Line-conducted HF, amplitude-mod-ulated, IEC 61000-4-6, class III

10 V; 150 kHz to 80 MHz; 80 % AM;1 kHz

Magnetic field with power frequencyIEC 61000-4-8, class IV; IEC 60255-6

30 A/m continuous; 300 A/m for 3 s;50 Hz; 0.5 mT; 50 Hz

Oscillatory surge withstand capabilityANSI/IEEE C37.90.1

2.5 to 3 kV (peak); 1 to 1.5 MHzDamped wave; 50 surges per second;Duration 2 s; Ri = 150 to 200

Fast transient surge withstandcapability, ANSI/IEEE C37.90.1

4 to 5 kV; 10/150 ns; 50 surgesper second;both polarities; duration 2 s;Ri = 80

Radiated electromagnetic interference,IEEE C37.90.2

35 V/m; 25 to 1000 MHzamplitude and pulse-modulated

Damped oscillationsIEC 60894, IEC 61000-4-12

2.5 kV (peak value), polarityalternating 100 kHz1, 10 and 50 MHz,Ri = 200

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Technicaldata

EMC tests for interferenceemission

(Type test)

Standard EN 50081-* (generic standard)

Conducted interference voltage onlines, only auxiliary supply,IEC-CISPR 22

150 kHz to 30 MHzLimit class B

Radio interference field strengthIEC-CISPR 22

30 to 1000 MHzLimit class B

Mechanical dynamic tests

Vibration, shockstress and seismic vibration In service

Standards IEC 60255-21 and IEC 60068-2

Vibration

IEC 60255-21-1, class 2IEC 60068-2-6

Sinusoidal

10 to 60 Hz: 0.075 mm amplitude;60 to 150 Hz: 1 gaccelerationfrequency sweep 1 octave/min20 cycles in 3 othogonal axes

ShockIEC 60255-21-2, class 1IEC 60068-2-27

Half-sinusoidalacceleration 5 g, duration 11 ms,3 shocks each in both directionsof the 3 axes

Seismic vibrationIEC 60255-21-2, class 1IEC 60068-3-3

Sinusoidal1 to 8 Hz: 3.5 mm amplitude(horizontal axis),1 to 8 Hz: 1.5 mm amplitude(vertical axis),8 to 35 Hz: 1 gacceleration(horizontal axis),8 to 35 Hz: 0.5 gacceleration(vertical axis),frequency sweep 1 octave/min1 cycle in 3 orthogonal axes

During transport

Standards IEC 60255-21 and IEC 60068-2

VibrationIEC 60255-21-1, class 2IEC 60255-2-6

Sinusoidal5 to 8 Hz: 7.5 mm amplitude;8 to 150 Hz: 2 gaccelerationfrequency sweep 1 octave/min20 cycles in 3 orthogonal axes

ShockIEC 60255-21-2, class 1IEC 60068-2-27

Half-sinusoidalAcceleration 15 g, duration 11 ms,3 shocks each in both directionsof the 3 axes

Continuous shockIEC 60255-21-2, class 1IEC 60068-2-29

Half-sinusoidalAcceleration 10 g, duration 16 ms,1000 shocks each in both directionsof the 3 axes

Climatic stresstests

Temperatures

Type-tested acc. to IEC 60068-2-1and -2, test Bd, for 16 h

-25 C to +85 C / -13 F to +185 F

Temporarily permissible operatingtemperature, tested for 96 h

-20 C to +70 C / -4 F to +158 F

Recommended permanent operatingtemperature acc. to IEC 60255-6(Legibility of display may be im-paired above +55 C / +131 F) Limiting temperature during

permanent storage Limiting temperature during

transport

-5 C to +55 C / +25 F to +131 F

-25 C to +55 C / -13 F to 131 F

-25 C to +70 C / -13 F to +158 F

Humidity

Permissible humidity stressIt is recommended to arrange theunits in such a way, that they are notexposed to direct sunlight or pro-nounced temperature changes thatcould cause condensation.

Yearly average 75 % relative humid-ity; on 56 days in the year up to 93 %relative humidity; condensation is notpermitted

CE conformity

This product is in conformity withthe directives of the Council of theEuropean Communities on theapproximation of the laws of theMember States relating to the elec-tromagnetic compatibility (EMCCouncil Directive 89/336/EEC) and

concerning electrical equipment foruse within specified voltage limits(low-voltage directive 73/23/EEC).

The product conforms with the in-ternational standard IEC 60255 andthe national standard DIN 57435,Part 303 (corresponding toVDE 0435 Part 303).

The unit has been developped andmanufactured for use in industrialareas in accordance with the EMCstandard.

Conformity is proved by tests per-formed by Siemens AG in line with ar-ticle 10 of the Council Directives in

accordance with the generic standardsEN 50081 and EN 50082 for the EMCdirective and standard EN 60255-6 forthe low-voltage directive.

Functions

Differential protection (ANSI 87L, 87T)

Sensitivenormal tripstageIDiff>

Setting range ofIDiff> secondary 1 A

secondary 5 A

0.1 to 20 A (step 0.1)

0.5 to 100 ATripping time

IDiff > 2.5 IDiff > (setting)50 HzMin. 27 msTyp. 29 ms60 HzMin. 24 msTyp. 26 ms

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7 Line DifferentialProtection / 7SD52

7

Technicaldata

Delay time ofIDiff> trip stage

0.0 to 60.0 s

High-set fast trip stage IDiff>>

Setting rangeIDiff secondary 1 A

secondary 5 A0.5 to 100 A (step 0.01)2.5 to 500 A

Tripping time (two line ends)IDiff 2.5 IDiff>> (setting)

Min. 9 msTyp. 12 ms

Thermal overload protection (ANSI 49)

Setting rangesFactor k acc. to IEC 60255-8Time constant

1 to 4 (steps 0.01)1 to 999.9 min (steps 0.1 min)

Temperature alarm stage alarm/trip 50 to 100 % in relation to the triptemperature

Current alarm stage IalarmSecondary 1 ASecondary 5 A

0.1 to 4 A (step 0.1)0.5 to 20 A (step 0.1)

Trip time characteristic( )

t

k

=

ln

I I

I I

2 2

2 2

pre

N

Reset ratios / alarm / tripI/ Ialarm

Approx. 0.99Approx. 0.99

Tolerances Class 10 % acc. to IEC

Inrush restraint

Restraint ratio2nd harmonic I2fN/IfN 10 % to 45 % (step 1 %)

Max. current for restraint 1.1 A to 25 A (step 0.1 A 1 )

Crossblock function Can be switched on and off

Max. operative time for crossblockToper crossblk

0 to 60 s (step 0.01 s) ordeactivated (operating up to release)

Vector group adaptation with transformers in the differential zone

Adaptation of connection symbol 0 to 11 (x 30 ) (step 1)

Neutral point connection Earthed or not earthed(for each winding)

Backup overcurrent protection (ANSI 50N, 51N)

Operating modes Active only with loss of dataconnection or always active

Characteristic 2 definite-time stages / 1 inverse-timestage

Definite-timeovercurrentprotection (ANSI 50,50N )

Pickup definite time stage 1,phase current

0.1 to 25 A (1A) / 0.5 to 125 A (5A)(step 0.01 A) or deactivated

Pickup definite-time stage 1neutral (residual) current


Pickup definite-time stage 2,phase current


Pickup definite-time stage 2,neutral (residual) current


Time delay for definite-time stages 0 to 30 s, (step 0.01 s) or deactivated

TolerancesCurrent pickupDelay timesOperating time

3 % of set value or 1 % ofIN1 % of set value or 10 ms

Approx. 25 ms

Inverse-timeovercurrent protection (ANSI 51, 51N)

Phase current starting 0.1 to 4 A (1A) /0.5 to 20 A (5A)(step 0.01 A) or deactivated

Neutral (residual) current starting 0.05 to 4 A (1A) /0.25 to 20 A (5A)(step 0.01 A) or deactivated

Tripping characteristics

Tripping time characteristicsaccording to IEC 60255-3

Normal inverseVery inverseExtremely inverseLong time inverse

Time multiplier Tp = 0.05 to 3 s (step 0.01 s)or deactivated

Pickup threshold Approx. 1.1 x I/ Ip

Reset threshold Approx. 1.05 x I/ Ip

TolerancesOperating time for 2 I/Ip 5 % of setpoint 15 ms

Characteristicsaccording to ANSI/IEEE

InverseShort inverseLong inverseModerately inverseVery inverseExtremely inverseDefinite inverse

Time dial 0.5 to 15 (step 0.01) or deactivated

Pickup threshold Approx. 1.1 x M

Reset threshold Approx. 1.05 x M

TolerancesOperating time for 2 M 20 5 % of setpoint 15 ms

Instantaneous high-speed switch- onto-fault overcurrent protection(ANSI 50HS)

Operating mode Active only after c.b. closing;instantaneous trip after pickup

Characteristic 2 definite-time stages

Pickup current I>>> 0.1 to 15 A (1A) /0.5 to 75 A (5A)(step 0.01 A) or deactivated

Pickup current I>>>> 1 to 25 A (1A)/5 to 125 A (5A)(step 0.01 A) or deactivated

Reset ratio Approx. 0.95

Tolerances < 3 % of set value or 1 % of IN

1) Secondary data for IN = 1 A; with IN = 5 A the values must be multiplied

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Auto-reclosure(ANSI 79)

Number of auto-reclosures Up to 8

Operating modeswith line voltage check

Only 1-poleOnly 3-pole1 or 3-poleAdaptive

Discrimination between successfuland non-successful reclose attempts

Action times 0.01 to 300 s (step 0.01 s)or deactivated

Dead times 0.01 to 1800 s (step 0.01 s)or deactivated

Reclaim times 0.5 to 300 s (step 0.01 s)

CLOSE command duration 0.01 to 30 s (step 0.01 s)

Timer tolerance 1 % of setting value or 10 ms

Breaker failure protection (ANSI 50 BF)

Number of stagesCurrent start

20.1 to 4 A(1A)/0.5 to 20 A(5A)(step 0.01 A)

Delay time 0.05 to 1 s(step 0.01 s)

Shortest release time Approx. 10 ms

Timer tolerance 1 % of setting value or 10 ms

Operational measured values

Currents Primary, secondary and percent3 xIphase3I0, I1, I2, IE

Tolerances10 to 50 % IN50 to 200 % IN

Typically 1 % of 50 % INTypically 1 % of measured value

Voltages Primary, secondary and percent3 xVphase-earth, 3 xVphase-phase3 V0, V1, V2, Ven

Tolerances10 to 50 % VN50 to 200 % VN

Typically 1 % of 50 % VNTypically 1 % of measured value

Power and direction of power flow Primary and percentP, real power in WQ, reactive power in Var

S, apparent power in VAFrequency f

Power factor p.f. (cos )

TolerancesP: for |cos | = 0.7 to 1 andV/ VN, I/ IN = 50 to 120 %

Q: for |sin | = 0.7 to 1 andV/ VN, I/ IN = 50 to 120 %

S: for V/VN, I/ IN = 50 to 120 %

P.f.: for |cos | = 0.7 to 1

Typically 3 %

Typically 3 %

Typically 2 %

3 %

Technicaldata

Oscillographicfault recording

Measured analog channels 3 x Iphase-earth, 3 xI0, IE, 3 xIDiff3 xIstab, 3 xVphase-earth, 3 V0

Binary channels Pickup and trip information, othersignals can be freely configured

Maximum number of availablerecordings

8

Sampling interval 20 samples per cycle

Storage time Total of 10 sPre-trigger and post-fault recording,time and event storage time settable

Additional functions

Measured-value supervision Current symmetry

Voltage symmetryCurrent summationBroken wire supervision

Annunciations Buffer length 200

Event logging Storage of signals of the last 8 faults

Fault logging Buffer length 200

Switching statistics Phase-segregated summation of cir-cuit-breaker operationsSummated tripping current per phasetripping current of the last trip

Circuit-breaker test Trip-/close-cycle 3 phaseTrip-/close-cycle per phase

Setting range 0 to 30 s (step 0.01)

Dead time for c.b. trip/close-cycle 0 to 30 s (step 0.01)

Commissioning support Operational measured valuesCircuit-breaker testRead binary inputsInitiate binary inputsSet binary outputsSet serial interface outputsLockout of a deviceTest mode of the differentialprotection topology

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7/50

Selectionandordering data Description Order No. Order Code

7SD52 multi-end differentialprotectionrelay 7SD52 - - 0 fortwotosixlineends

Relaytype

Multi-end differential prot. relay fortwo line endoperation 2Multi-end differential prot. relay formulti-lineend op. (3 to 6) 3

Measurement input

IPhase = 1 A1), IE = 1 A 1

IPhase = 5 A1), IE = 5 A 5

Ratedauxiliaryvoltage (powersupply, binaryindicationvoltage)

24, 48V DC, binary input threshold 17V3) 260, 125 V DC2), binaryinput threshold17 V3) 4110,250 V DC2), 115 V AC binary inputthreshold 73V3) 5220,250 V DC2), 115 V AC binary inputthreshold 154 V3) 6

Unit version / numberof inputsand outputs

1/2x 19, 8 BI, 16 BO,for flush mounting, with screw-typeterminals A1/1x 19, 16 BI,24 BO,for flush mounting,with screw-typeterminals C1/2x 19, 24 BI,32 BO,for flush mounting,with screw-typeterminals D1/2x 19, 8 BI, 16 BO,for surface mounting,with screw-typeterminals E1/1x 19, 16 BI,24 BO,for surface mounting, with screw-typeterminals G1/1x 19, 24 BI,32 BO,for surface mounting , with screw-typeterminals H1/2 x 19,8 BI, 16BO, for flushmounting, withplug-interminals J1/1x 19, 16 BI,24 BO,for flush mounting,with plug-in terminals L1/1x 19, 24 BI,32 BO,for flush mounting,with plug-in terminals MWith 5 fast trip contacts, approx. 1 ms closing time1/1x 19, 16 BI,24 BO,for flush mounting,with screw-typeterminals NWith5 fast trip contacts, approx. 1 ms1/1x 19, 24 BI,32 BO,for flush mounting,with screw-typeterminals P

With5 fast trip contacts, approx. 1 ms1/1x 19, 16 BI,24 BO,for surface mounting, with two-tier terminals QWith5 fast trip contacts, approx. 1 ms1/1x 19, 24 BI,32 BO,for surface mounting, with two-tier terminals RWith5 fast trip contacts, approx. 1 ms1/1x 19, 16 BI,24 BO,for flush mounting,with plug-in terminals SWith5 fast trip contacts, approx. 1 ms1/1x 19, 24 BI,32 BO,for flush mounting,with plug-in terminals T

Regionand operatinglanguage

RegionGE, language German (selectable) ARegionWorld, language English (GB) (selectable) B

RegionUS, language English (US) (selectable) C

System interface:functionalityand hardware

No systeminterface 0IEC 60870-5-103, electrical RS232 1IEC 60870-5-103, electrical RS485 2IEC 60870-5-103, fiber-optical 820 nm, ST connector 3

DIGSI/modeminterface(on rearside of unit)and protectioninterface 9 M No DIGSI interfaceon rear of unit 0DIGSI 4, electrical RS232 1DIGSI 4, electrical RS485 2DIGSI 4, fiber-optical 820nm, ST connector 3

Protectioninterface1

Optical 820 nm, two ST connectors, FOcable lengthup to1.5 kmfor directconnectionor via communication networks AOptical 820 nm, two ST connectors, FOcable lengthup to3.5 kmfordirectconnection via multi-modeFO cable BOptical 1300nm, two ST connectors, FOcable length up to 10kmfordirectconnection via mono-mode FO cable COptical 1300nm, two FCconnectors, FOcable lengthup to35 kmfordirectconnection via mono-mode FO cable D

1) Rated current can be selected bymeans of jumpers.

2) Transition between the two auxiliary

voltage ranges can be selected bymeans of jumpers.

3) The binary input thresholds can beselected in two stages by means ofjumpers.


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7/51

Selectionandordering data Description Order No. Order Code

7SD52 multi-end differential protection relay for 7SD52 - - twotosixlineends

Functions1

Tripping 3-poleonly,without auto-reclosure 0Tripping 3-pole only, with auto-reclosure 1Tripping 1 and3-poleonly, without auto-reclosure 2Tripping 1 and3-poleonly, with auto-reclosure 3

Functions1 withprotectioninterface 2 (only possible for7SD523) 9 N

Functions 1

Tripping 3-pole only, without auto-reclosure 0Tripping 3-pole only, with auto-reclosure 1Tripping 1 and3-poleonly, without auto-reclosure 2Tripping 1 and3-poleonly, with auto-reclosure 3

Protectioninterface2Optical 820 nm, two ST connectors, FOcable lengthup to1.5 kmfor directconnectionor via communication networks AOptical 820 nm, two ST connectors, FOcable lengthup to3.5 kmfordirectconnection via multi-modeFO cable BOptical 1300nm, two ST connectors, FOcable length up to 10kmfordirectconnection via mono-mode FO cable COptical 1300nm, two FCconnectors, FOcable lengthup to35 kmfordirectconnection via mono-mode FO cable D

Backupprotectionfunction

Without AWith emergency/ backup overcurrent-timeprotection BWith emergency/ backup overcurrent-timeprotection / breaker-failure protection C

Additional functions 1Without additional functions AWith transformer extension (vector groupadaptation) EWith 4 remote commands / 24 remote indications JWith 4 remote commands / 24 remote indications,transformerextensions(vector groupadaptation) N

External synchronization

Without external GPS-synchronizationof differential protection 0With external GPS-synchronization of differential protection 1

Orderingexample with ordercode

Multi-end differential protection relay,here:Position12 = 9 points to M1A,thismeans design withRS232 DIGSI interfaceon therear of thedeviceand

protection interface1: 820nm, directconnection 7SD5221-4AA39-2AJ0+ M1A

Opto-electric communication converter(connectionto communication device)

Converterfor the serial connectionof the7SD52multi-enddifferential protection relay to theX21 or G703.1or RS422synchronous communication interfaces.Connection via FOcable for 62.5/ 125 mor50/120 m and 820 nmwavelength (multi-mode FO cable) with ST connector; max. distance 1.5kmElectrical connectionvia X21or G703.1interface 7XV5662-0AA00

Opto-electric communication converter(connectionto pilot wire)

Converterto interfaceto a pilot wire or twisted telephonepair (8 to 12 km length)Connection via FOcable for 62.5/125m or50/120m and 820 nmwavelength(multi-mode FO cable) with ST connector;max. distance 1.5km, screw-typeterminals to pilot wire 7XV5662-0AC00

Additional orderof interface modulesProtectioninterface module, opt.820 nm,multi-modeFO cable, ST connector,1.5 km C53207-A322-D651-1

Protectioninterface module, opt.820 nm,multi-modeFO cable, ST connector,3.5 km C53207-A322-D652-1

Protectioninterface module, opt.1300 nm,mono-modeFO cable, ST connector,10 km C53207-A322-D653-1

Protectioninterface module, opt.1300 nm,mono-modeFO cable, FC connector, 35 km C53207-A322-D654-1


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7/52

Accessories

Description Order No. Size of

package

Supplier Fig.

Connector 2-pin

3-pin

C73334-A1-C35-1

C73334-A1-C36-111

Siemens

Siemens

7/56

7/57

Crimp CI2 0.5 to 1 mm2

connector0-827039-1

0-827396-1

40001

AMP1)

AMP1)

CI2 1 to 2.5 mm2

0-827040-1

0-827397-1

40001

AMP1)

AMP1)

Type II + 0.75 to 1.5 mm2

0-163083-7

0-163084-2

4000

1

AMP1)

AMP

1)

Crimping For Type III +tool and matching female

For CI2and matching female

0-539635-1

0-539668-2

0-734372-1

1-734387-1

1

1

AMP1)

AMP1)

AMP1)

AMP1)

19"-mounting rail C73165-A63-D200-1 1 Siemens 7/55

Short-circuit links For current terminalsFor other terminals

C73334-A1-C33-1

C73334-A1-C34-1

11

SiemensSiemens

7/587/59

Safety cover for terminals largesmall

C73334-A1-C31-1

C73334-A1-C32-11

1

SiemensSiemens

Fig. 7/55 Mounting rail for 19" rack

Fig. 7/56

2-pin connector

Fig. 7/57

3-pin connector

Fig. 7/58

Short-circuit link

for current

contacts

Fig. 7/59

Short-circuit link

for voltage

contacts/

indications

contacts

1) AMP Deutschland GmbHAmperestr. 71163225 LangenGermany

Tel.: +49 6103 709-0Fax +49 6103 709-223

LSP2089-afpen.t

if

LSP2091-afpen.eps

LSP2090-afpen.eps

LSP2093-afpen.eps

LSP2092-afpen.eps

Description Order No.

DIGSI4

Software for configuration and operation of Siemens protection unitsrunning under MS Windows (version Windows 95 and higher)device templates, Comtrade Viewer, electronic manual includedas well as Getting started manual on paper, connecting cables (copper)

Basis

Full version with license for 10 computers, on CD-ROM

(authorization by serial number) 7XS5400-0AA00

Demo

Demo version on CD-ROM 7XS5401-0AA00

Professional

Complete version:

DIGSI 4 Basis and additionally SIGRA (fault record analysis),

CFC Editor (logic editor), Display Editor (editor for default

and control displays) and DIGSI 4 Remote (remote operation) 7XS5402-0AA00

Connectingcable

(contained in DIGSI 4, butcanbe ordered additionally)

Between PC/notebook/laptop (9-pin connector)

and protection unit (25-pin connector) 7XV5100-2

Between PC/notebook/laptop (9-pin connector)

and protection unit (9-pin connector) 7XV5100-4

GPS timesynchronizing unit

GPS 1 sec pulse and time telegram IRIG B/DGF 77 Order No.on request

Manualfor 7SD522/523v 4.1

English C53000-G1176-C132


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Connectiondiagram

Fig. 7/60 Basic version in housing x 19 with 8 binary inputsand 16 binary outputs

Serial interfaces

7/53


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Connectiondiagram

Fig. 7/62 Medium version in housing 1/1 x 19

7/54


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Connectiondiagram

Fig. 7/63 Maximum version in housing 1/1 x 19

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7/56

Dimensiondrawings inmm/inch

Dimension drawings for 1/2 and 1/1 x 19flush-mounting housing

Fig. 7/64

in 1/2 x 19 flush-mounting

housing

Fig. 7/65

in 1/1 x 19 flush-mounting housing


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7

Dimensiondrawings inmm/inch

Dimension drawings for 1/2 and 1/1 x 19flush-mounting housing

Front view in 1/ 2 surface-mounting housing 7XP20 Side view

Fig. 7/66

Front view in 1/1 surface-mounting housing 7XP20

(without sloped FO case)

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7sd52x differential protection for 2-6 line-terminals_catalo

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